DIESubprogram: Add parsing for main subprogram attribute.

- Will be used later to recognize the main function of a given program.

src/apps/debugger/dwarf/DebugInfoEntries.cpp

@@ -1840,6 +1840,7 @@ DIESubprogram::DIESubprogram()
 	fAddressClass(0),
 	fPrototyped(false),
 	fInline(DW_INL_not_inlined),
+	fMain(false),
 	fArtificial(false),
 	fCallingConvention(DW_CC_normal)
 {
@@ -1893,6 +1894,9 @@ DIESubprogram::AddChild(DebugInfoEntry* child)
 		case DW_TAG_template_value_parameter:
 			fTemplateValueParameters.Add(child);
 			return B_OK;
+		case DW_TAG_GNU_call_site:
+			fCallSites.Add(child);
+			return B_OK;
 		default:
 			return DIEDeclaredNamedBase::AddChild(child);
 	}
@@ -2018,6 +2022,15 @@ DIESubprogram::AddAttribute_calling_convention(uint16 attributeName,
 }
 
 
+status_t
+DIESubprogram::AddAttribute_main_subprogram(uint16 attributeName,
+	const AttributeValue& value)
+{
+	fMain = true;
+	return B_OK;
+}
+
+
 // #pragma mark - DIETemplateTypeParameter
 
 

src/apps/debugger/dwarf/DebugInfoEntries.h

@@ -1225,12 +1225,15 @@ public:
 										{ return fTemplateTypeParameters; }
 			const DebugInfoEntryList TemplateValueParameters() const
 										{ return fTemplateValueParameters; }
+			const DebugInfoEntryList CallSites() const
+										{ return fCallSites; }
 
 			bool				IsPrototyped() const	{ return fPrototyped; }
 			uint8				Inline() const			{ return fInline; }
 			bool				IsArtificial() const	{ return fArtificial; }
 			uint8				CallingConvention() const
 										{ return fCallingConvention; }
+			bool				IsMain() const			{ return fMain; }
 
 			DIEType*			ReturnType() const		{ return fReturnType; }
 
@@ -1264,6 +1267,10 @@ public:
 	virtual status_t			AddAttribute_calling_convention(
 									uint16 attributeName,
 									const AttributeValue& value);
+	virtual	status_t			AddAttribute_main_subprogram(
+									uint16 attributeName,
+									const AttributeValue& value);
+
 
 protected:
 			DebugInfoEntryList	fParameters;
@@ -1271,6 +1278,7 @@ protected:
 			DebugInfoEntryList	fBlocks;
 			DebugInfoEntryList	fTemplateTypeParameters;
 			DebugInfoEntryList	fTemplateValueParameters;
+			DebugInfoEntryList	fCallSites;
 			target_addr_t		fLowPC;
 			target_addr_t		fHighPC;
 			off_t				fAddressRangesOffset;
@@ -1281,6 +1289,7 @@ protected:
 			uint8				fAddressClass;
 			bool				fPrototyped;
 			uint8				fInline;
+			bool				fMain;
 			bool				fArtificial;
 			uint8				fCallingConvention;